We look at the division of 71091067 by 511 
We want to figure out the number of times 71091067 can be divided by 511.

Step 1:
7 divided by 511 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 511

On to step 2:
If we divide 71 by 511, we get 0 and a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 71 after subtracting 0 from 71.
Grab the next digit (0) from the dividend, add it to 71, then carry on: 710 / 511

Going ahead to step 3:
If we divide 710 by 511, we get 1 and a remainder of 199.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 511 from 710 and we're left with 199.
Grab the next digit (9) from the dividend, add it to 199, then carry on: 1999 / 511

Let's proceed to step 4:
The number 511 fits into 1999 3 times, leaving a remainder of 466.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 1533 away from 1999, we end up with 466.
Bring next digit (1) of the dividend behind the 466 and repeat the process: 4661 / 511

On to step 5:
When dividing 4661 by 511, we get 9 with a remainder of 62.
Put 9 as the next digit of the answer. 
Result so far: 139.0
Subtract 4599 from 4661 to get 62.
Include the next digit (0) from the dividend after 62, then repeat: 620 / 511

Moving on to step 6:
The number 511 fits into 620 1 times, leaving a remainder of 109.
Record the quotient 1 as the next digit in the result. 
Result so far: 1391.0
If we take 511 away from 620, we end up with 109.
Take the next digit (6) from the dividend and append it to 109, then repeat: 1096 / 511

Advancing to step 7:
The number 511 fits into 1096 2 times, leaving a remainder of 74.
Use 2 as the next digit of our solution. 
Result so far: 13912.0
If we take 1022 away from 1096, we end up with 74.
Fetch the next digit (7) from the dividend, attach it to 74 and continue: 747 / 511

Let's proceed to step 8:
511 goes into 747 1 times with a remainder of 236.
Put 1 as the next digit of the answer. 
Result so far: 139121.0
Deduct 511 from 747 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 9:
511 goes into 2360 4 times with a remainder of 316.
The number 4 becomes the next digit in our result. 
Result so far: 139121.4
If we subtract 2044 from 2360, we get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Step 10:
If we divide 3160 by 511, we get 6 and a remainder of 94.
Put 6 as the next digit of the answer. 
Result so far: 139121.46
If we take 3066 away from 3160, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 11:
When dividing 940 by 511, we get 1 with a remainder of 429.
Write down 1 as next digit of the result. 
Result so far: 139121.461
Subtract 511 from 940 to get 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Let's proceed to step 12:
4290 divided by 511 is 8 with a remainder of 202.
Put 8 as the next digit of the answer. 
Result so far: 139121.4618
Subtract 4088 from 4290 to get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Advancing to step 13:
The number 511 fits into 2020 3 times, leaving a remainder of 487.
The number 3 becomes the next digit in our result. 
Result so far: 139121.46183
Subtracting 1533 from 2020 leaves us with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Let's proceed to step 14:
If we divide 4870 by 511, we get 9 and a remainder of 271.
Write down 9 as next digit of the result. 
Result so far: 139121.461839
Subtract 4599 from 4870 to get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 15:
511 can be fit into 2710 5 times, resulting in a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 139121.4618395
Deduct 2555 from 2710 and we're left with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Advancing to step 16:
511 can be fit into 1550 3 times, resulting in a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 139121.46183953
The remainder is 17 after subtracting 1533 from 1550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final outcome is 139121.46183953, with a leftover of 1.7e-08.